Answer:
9 hours and 20 minutes: b
Step-by-step explanation:
4*60=240
7x240=1680
1680/3=560
560= 9 h 20 m
The time required when 3 electricians are working is 9 hours and 20 minutes.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
The time required to complete the job varies inversely with the number of people working.
This means that if the number of people working decreases, the time required to complete the job will increase.
We can use the formula for inverse variation to solve the problem:
t = k/n
where t is the time required to complete the job, n is the number of people working, and k is a constant of proportionality.
We can find k by plugging in the given values:
4 = k/7
k = 28
Now we can use the formula to find the time required when 3 electricians are working:
t = 28/3
t ≈ 9.33 hours
Converting this to hours and minutes, we get:
t ≈ 9 hours and 20 minutes
Thus,
The time required when 3 electricians are working is 9 hours and 20 minutes.
Learn more about expressions here:
https://brainly.com/question/3118662
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please help, it's due really soon!
Answer:
Ok so you have to figure out what is the input, output, y-intercept (b), slope (m), and equation.
First, input is the x. Looking at the graph.
Input : 0, 10, 20
Second, output is the y. Looking at the graph.
Output : 20, 30, 40
Third, y-intercept is the b in the equation of y = mx + b. Looking at the graph.
Y-intercept (b) : 20
Fourth, slope is the m in the equation of y = mx + b. Looking at the graph.
Slope (m) : 1/2
Fifth, you have to find the equation in the form of y = mx + b. Looking at the graph.
Equation : y = 1/2x + 20
I hope this helps and if you have any other questions I would be glad to answer it, thank you :) !!
Please help
What is 5x(1+6x) simplified
Answer: 35x is the answer
Step-by-step explanation:
5x + 30x
35x
(10³⁰ × 10⁴⁵ ) - (10⁹⁰ ÷ 10¹⁵)
Answer:
0
Step-by-step explanation:
HELPPP TEST WILL GIVE BRAINLIEST
Answer:
Okay I haven't done this in awhile but okay so (1) if you are going off of the Y's then no it would be a function X's Yes its a function, (2) None of the dots are on the same area so like if you draw a line down from where each of the dots are and it touches another dot then its not a function, but lucky for you it is a function. (3) isn't function because if you can see number 9 have 2 lines going from it so its not (4) is a function because if you draw a bunch of lines and they don't go through the line in the middle your good. I hoped this helped you. Bye Bye.
Step-by-step explanation:
8.
If A= {x:xis a factor of 72}
B= {x:%2x+3<2x-3).
C= {x:x<20} and A,B,Ccu.
Where u = {integers), list the
elements of AnBnc.
that small c is subset and the small n is intersection set
Answer:
{2, 3, 4, 6, 8, 9, 12, 18}
Step-by-step explanation:
If A= {x: xis a factor of 72}
A = {2, 3, 4, 6, 8, 9, 12, 18, 36, 72}
If B= {x: 2x+3<2x-3).
-2x+3 <2x-3
-2x - 2x < -3-3
-4x < -6
x > 3/2
If
C= {x:x<20}
C = {-∞, 19}
The intersection of the sets AnBnc = {2, 3, 4, 6, 8, 9, 12, 18}
Note that intersection means all the elements common to the three sets
What number has a absolute of 10?
Answer:
10
Step-by-step explanation:
Answer:
10, -10, [tex]\sqrt{100} =10[/tex]
Step-by-step explanation:
id k if you are asking for the absolute value, but I hope this helps.
Mary baked 56 cookies. She had to bake 300 cookies in order to win $400. She made 72 more cookies. Then, she lost 34 of them. How many cookies does she have now? How many more cookies does she need in order to win $400? Show your work.
PLSSS HELP!!!
SHOW ALL WORK, ANSWER ALL QUESTIONS AND YOU WILL GET BRAINLIEST!
IM DEPENDING ON ALL OF YOU GUYS! DONT FAIL ME! PLS!
Answer:
56+72=128 cookies
128-34=94 cookies
Mary has 94 cookies
300-94=206 cookies she still needs to bake in order for her yo win $400
Find The value of x =
Answer:
x = 10
Step-by-step explanation:
5 / sin 30° = x / sin 90°
5 / (1/2) = x / 1
5 . 1 = 1/2 . x
5 = 1/2x
x = 5/1/2
x = 10/1
x = 10
For one acute angle θ of a right triangle, tan θ =2/[tex]\sqrt{x} 5[/tex]
. Find the other five trigonometric functions of θ.
Simplify radicals.
Step-by-step explanation:
hope this much is ok
___ welcome____
What is 3.8% of 250?
Answer:
20
Step-by-step explanation:
8% × 250 =
(8 ÷ 100) × 250 =
(8 × 250) ÷ 100 =
2,000 ÷ 100 =
20;
Answer:
3.8%×250=
9.5
so the answer is 9.5
I NEED HELP ON NUMBER 13 ASAP PLSSSS HELPPP
Step-by-step explanation:
I am not sure about this question sry but u can try asking a tutor u don't need to use any points
Can anyone help me;(
Answer:
Use "photo math."
Step-by-step explanation:
PLEASE ANSWER ALL QUESTIONS 69 POINTS WILL MARK BRAINLIST
Answer:
See belowStep-by-step explanation:
Proportional relationship formula is:
y = kxa) Use point (1, 3.5) to find k:
3.5 = k*1k = 3.5b) Unit rate is:
cm per minc) Point (8, 28) indicates:
Water level of 28 cm after 8 mind) x = 20, y =?
y = 3.5(20) = 70 cmSolve (x+5)32=(x−1)3
Answer:
v = 3 ( x − 1 ) 32 ( x + 5 )
Triangle A'B'C' is the image of triangle ABC.
HELPPPP ME. please!!!!
Answer:
w<5
Step-by-step explanation:
to the left means less to the right means greater. its it to the left of 5 then it is less than 5
Answer:
I believe you have the the answer mark
arla and Benicio work in a men’s clothing store. They earn commission from each suit and each pair of shoes they sell. For selling 3 suits and one pair of shoes, Carla has earned $47 in commission. For selling 7 suits and 2 pairs of shoes, Benicio has earned $107 in commission. How much do the salespeople earn for the sale of a suit? for the sale of a pair of shoes?
Solve for t. (Answer must be completely simplified)
10t=11
Answer:
T can be equal to 1 1/10 or 1.1 or 11/10
Step-by-step explanation:
10t=11
So divide by 10 on both sides.
t=11/10 which can be simplified to t=1 1/10 or t=1.1
:)
Please anyone help please ASAP
Answer:
Angle WTS will be 180 degree minus 15x. You can write this as an expression:
180-15x
Now you have an expression for each angle in the triangle. Triangles will always have 180 degrees in them. You can add the expressions together and set it equal to 180. Then you can solve the equation for the x variable.
Step-by-step explanation:
Angle SWT + angle WTS + angle TSW = 180 degrees
Replace each angle with the expression then solve.
Answer:
x=7.90 x≈8
Step-by-step explanation:
they are alternate interior angles
so: 7x+6+15x=180
22x+6=180
22x=174
=7.9090......
you can double check my work
Write the linear equation in slope-intercept form given the following:
(1, 4) ; slope=−2
Answer:
y = -2x + 6
Step-by-step explanation:
The y-intercept is where the line goes through the y-axis. So, you'd want to find the value of y when x is 0.
what is the area of a workshop that is 4 yeards wide and 5 2/3 yards long
the options are 9 2/3 13 1/3 20 2/3 22/23
302.833 rounded to the nearest whole number
Answer:
303
Step-by-step explanation:
Step-by-step explanation:
When rounding a decimal to the nearest whole number, we look at the tenths place. If it is {5,6,7,8,9} we round the ones place up. If it is {0,1,2,3,4} the ones place stays the same.
For 302.833, the tenths place is 8.
Therefore we round 302.833 up to 303.
The answer is 303.
I NEED HELP PLEASE !!!
PLZ HELP RN I WILL GIVE YOU BRAINIEST!!!
Roman was studying the life of fish, frogs, and turtles in
Doyle Park. In two hours, he counted 4 more frogs than
turtles. The number of fish he counted was twice the
number of turtles. In total, he counted 68 animals. How
many fish were there?
how many frogs were there? how many turtles were there?
Answer:
16 turtles
20 frogs
32 fish
Step-by-step explanation:
let 't' = # turtles
let '4 + t' = # frogs
let '2t' = # fish
t + 4 + t + 2t = 68
4t + 4 = 68
4t = 64
t = 16 turtles
4 + 16 = 20 frogs
2(16) = 32 fish
8. A farmer has some ducks and pigs in his farm. A visitor counted 16 hoads and 50
legs for those animals. How many ducks and pigs are there in the farm?
A. 7 ducks and 9 pigs
C. 10 ducks and 6 pigs
B.7 pigs and 9 ducks
D. 10 pigs and 6 ducks
Answer:
A
Step-by-step explanation:
Ducks have 2 feet and 7x2=14
Pigs have 4 feet and 9x4= 36
36+14=50 legs
7+9= 16 heads
A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves
same rest stop 1/4 hour later following the truck at a steady rate of 64 mi/h. How long after the truck leaves the rest stop will the car overtake the truck? Write an equation and solve
Answer:
Step-by-step explanation:
T=56t and C=64(t-.25)
64(t-.25)=56t
64t-16=56t
8t-16=0
8t=16
t=2 hours
Are the following functions linear or nonlinear?
Answer:
Linear
Step-by-step explanation:
PLEASE HELP EASY MATH
Answer:90
Step-by-step explanation:
When the sum of two angles is 90°, then the angles are known as complementary angles. In other words, if two angles add up to form a right angle, then these angles are referred to as complementary angles.
Noah is planning his birthday party. He is deciding between three themes: space, safari, and comics. He also has to determine where he wants his party, at a skating rink or a park. Lastly, he needs to pick the day of the week that the party will happen. His options are Friday, Saturday, or Sunday. How many different possible party outcomes does Noah have with all of these options? solve 1 2 3 4 5 by this math problem
Answer:
the answer is 18.l hope is good
Answer:18
Step-by-step explanation:3 (themes) X 2 (places) X 3 (days) = 18 or because 3 themes times 2 places times 3 days of the week = 18 options
Please help need done fast!
